Definition of Quartz 1. Colorless glass made of almost pure silica Noun 2. A hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities Noun Synonyms for word "quartz" Semanticaly linked words with "quartz" Hyponims for word "quartz" etymology quartziferous etymology quartzless etymology quartzlike etymology quartzoid etymology quartzy etymological origin of Quarz [German] is derived from Colorado topaz is derived from drusy quartz is derived from fused quartz is derived from quartz clock is derived from quartz crystal is derived from quartz glass is derived from quartz halogen lamp is derived from quartz heater is derived from quartz lamp is derived from quartz watch is derived from quartz-iodine lamp is derived from quartzes is derived from quartziferous is derived from quartzing is derived from quartzite is derived from quartzose is derived from rose quartz is derived from smoky quartz